This visualization displays a map of the United States with state borders and an outline of the country. It uses the `d3.geoPath` projection and renders geographic features as SVG paths, with a graticule outline drawn around the map. The map data is loaded from the `us-atlas` package as TopoJSON and converted using the `topojson-client` library. The states are filled in white with black borders, while the outer outline uses a thicker stroke to differentiate it from the internal boundaries.